A woman has now been standing on top of a tall Thornton Heath building on Brigstock Road since around 3pm on Tuesday (April 24), and emergency services are working to resolve the situation.

Photos showing a large emergency service presence have been sent to the Advertiser, while reports continue to come in that crowds are gathering around the scene.

Police were called to the scene at 3.15pm to reports of concerns for a person standing on top of a building on Brigstock Road. London Ambulance Service (LAS) paramedics and London Fire Brigade (LFB) firefighters are also in attendance in a supporting role.

At 5.45pm a spokesman for LAS said: "We were called at 3.19pm today to Brigstock Road, Thornton Heath, to reports of an incident. We sent an incident response officer, a single responder in a car and an ambulance crew. We remain on scene."

A spokeswoman for LFB said: "We were called at 3.51pm to assist police teams as they attended a call relating to concern for the safety of a woman."

A police cordon is in place around the scene on Brigstock Road (Image: @DSM112)

A witness at the scene, who did not want to be named, said: "The lady has been there all afternoon and I don't know what she is doing up there. There was a very fast response from the police and fire brigade, and so hopefully they will be able to help her get down from up there.

"I think it would help if everyone stopped crowding around the scene and watching because I think that is just going to make things even worse."

Photos show large crowds around the police cordon on Brigstock Road, and several Twitter users have tweeted to say that a number of people are watching the scene and taking photos.